CVE-2026-27091 in lite Plugin
Summary
by MITRE • 03/19/2026
Missing Authorization vulnerability in UiPress UiPress lite allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects UiPress lite: from n/a through 3.5.09.
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Analysis
by VulDB Data Team • 03/19/2026
The CVE-2026-27091 vulnerability represents a critical missing authorization flaw within the UiPress lite plugin, specifically impacting versions ranging from an unspecified initial release through 3.5.09. This security weakness stems from incorrectly configured access control security levels that fail to properly validate user permissions before granting access to sensitive functionalities. The vulnerability exists within the plugin's authorization mechanisms, where proper access control checks are either absent or improperly implemented, allowing unauthorized users to bypass intended security restrictions. This issue fundamentally undermines the plugin's ability to enforce proper user role-based access controls, creating a pathway for malicious actors to exploit the system's security boundaries.
The technical implementation of this vulnerability manifests through the absence of proper authorization checks within the plugin's core functions. When users attempt to access restricted features or perform administrative actions, the system fails to verify whether the requesting user possesses the necessary privileges to execute such operations. This flaw operates at the application level where the plugin should enforce strict access control policies but instead allows operations to proceed regardless of user credentials or role assignments. The vulnerability's impact is amplified by the fact that it affects the entire plugin ecosystem, meaning that any functionality requiring proper authorization becomes potentially accessible to unauthorized parties. This misconfiguration aligns with CWE-285, which addresses improper authorization issues in software systems, and represents a classic example of how inadequate access control implementation can create security breaches.
The operational consequences of this vulnerability extend beyond simple unauthorized access, as it enables potential attackers to escalate privileges and perform actions that should be restricted to administrators or authorized personnel only. An attacker exploiting this flaw could gain access to sensitive data, modify system configurations, or even execute arbitrary code depending on the plugin's functionality and the underlying system architecture. The vulnerability's persistence across multiple versions indicates a systemic issue within the plugin's development lifecycle, suggesting that proper security testing and code review processes may have been insufficient during the development phases. This weakness creates a persistent threat vector that remains exploitable until the underlying authorization mechanisms are properly implemented and validated.
Organizations utilizing UiPress lite within their WordPress environments face significant risk exposure due to this vulnerability, particularly those with multiple user roles or sensitive data management requirements. The impact is especially severe in environments where the plugin handles user management, content editing, or system configuration tasks, as unauthorized access to these functions could lead to data breaches, system compromise, or regulatory compliance violations. Security teams should immediately assess their current plugin installations and implement immediate mitigations while planning for proper updates. The vulnerability demonstrates the critical importance of maintaining updated security controls and conducting regular security assessments to identify and remediate access control weaknesses. Organizations should also consider implementing network-level protections and monitoring for suspicious access patterns to detect potential exploitation attempts. This vulnerability serves as a reminder of the essential role that proper authorization mechanisms play in maintaining overall system security posture and the necessity of following established security frameworks and best practices throughout the software development lifecycle.